Tesla - Tesla is perhaps the most well-known American battery technology company, having pioneered the development of electric vehicles (EVs) with its Model S, Model X, and Model 3 cars. The company also produces energy storage systems for homes and businesses, as well as large-scale utility battery systems.

QuantumScape is a Silicon Valley-based company that is developing solid-state lithium-metal batteries, which promise to offer higher energy density, faster charging times, and improved safety over traditional lithium-ion batteries.

Solid Power - Solid Power is a Colorado-based company that is developing solid-state batteries for electric vehicles and other applications. The company's batteries use a lithium-metal anode and a high-capacity cathode to deliver improved energy density and performance over traditional lithium-ion batteries.

Eos Energy Storage is a New Jersey-based company that produces grid-scale energy storage systems using its proprietary zinc hybrid cathode battery technology. The company's batteries are designed to provide reliable, long-duration energy storage for utilities and other customers.

24M is a Massachusetts-based company that is developing next-generation lithium-ion batteries using a novel manufacturing process that promises to reduce costs and improve performance. The company's batteries are designed for use in electric vehicles, grid-scale energy storage systems, and other applications.